The advanced coating process adopted by Nano Macro Optics Co.,Ltd. (NMOT) is used to coat the optical glass with multiple layers of IAD rigid reflective film, which has the characteristics of high reflectivity, dielectric mirror, high damage threshold, corrosion resistance, long life, and strong film layer. All-dielectric mirrors can reach a very high level of reflectivity at specific wavelengths or bands, up to more than 99%, and can be used in medium and high-power lasers.